Student:	Haluk KELEŞ
Supervisor:	Doç. Dr. Tevfik KÜÇÜKÖMEROĞLU
Department:	Mechanical Engineering
Institution:	Graduate School of Natural and Applied Sciences
University:	Karadeniz Technical University, Turkey

Title of the Thesis:	The Effect Of Friction Stir Process Applied To Pump Impeller Material Nickel Aluminium Bronze On Material s Cavitation Resistance
Level:	M.Sc.
Acceptance Date:	10/6/2016
Number of Pages:	134
Registration Number:	i3064

Summary:

In this study, a centrifugal pump impeller is designed which has radial straight blade.

The best parameters of Friction Stir Processing (FSP) have been determined by results of

preliminary experiments and checking literature. The pump impeller blades made from

Nickel Aluminium Bronze (NAB) material subjected to surface treatment with the FSP

method. The manufactured impeller blades can be disassembled and pluggable, so it can

possible to examine at the desired stage by disassemble while operation continuing.

System designed as a closed circuit that water suction by centrifugal pump from a tank.

Cavitation behavior of pump impeller was examined which has run in the cavitation risk

zone. Mechanical properties is gotten better and cavitation resistance improved up to 10

times after applying FSP to NAB which has used to manufacture pump impeller is

determined.

Key Words: Friction Stir Processing, Nickel Aluminium Bronze, Cavitation,

Cavitation Failure, Centrifugal Pumps, Pump Impeller